Former Arsenal striker and ESPN FC pundit, Paul Mariner, believes signing Philippe Coutinho would be fantastic for ​Manchester United, but does not see any reason for the Brazilian to leave La Liga holders, Barcelona.

Many reports have linked the former Liverpool man with an unlikely return to the Premier League with the Reds' bitter rivals, United.

Since his £142 million move to Barcelona, last January, the midfielder hasn't quite lived up to the billing. Multiple sources claim the Blaugrana are growing frustrated with his inconsistency and are already looking to cash in.

Coutinho, who scored from the spot in the 2-1 Copa del Rey defeat at Levante, is determined to establish himself as a regular, and Mariner, too, believes he will be wise to remain at the Nou Camp.